diff --git a/modules/databases/postgresql.nix b/modules/databases/postgresql.nix
index afb1c3d..4f8cde6 100644
--- a/modules/databases/postgresql.nix
+++ b/modules/databases/postgresql.nix
@@ -19,6 +19,8 @@ in {
       enable = true;
       initdbArgs = [
         "--allow-group-access"
+        "--encoding=UTF8"
+        "--locale=C"
       ];
       settings = {
         log_connections = true;